O Scale 33" Nickel Silver Plated Brass Insulated Wheelsets
These wheels follow NMRA RP-25 Standards.
One wheel is insulated from the all-metal axle.
The entire wheelset is non-magnetic.
The axle length is 1.792" (+- .008")
Wheel diameter can be measured with a caliper: 33" wheels measure (33/48=.687") in O scale. (1:48 = O scale to prototype ratio. O scale is 48 times smaller than the prototype).
